Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1101-1111 pattern in any orientation.
A146870
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1101-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =17a(5) =29a(6) =97a(7) =473a(8) =2981a(9) =21253a(10) =221233a(11) =1979801a(12) =27911349a(13) =414463777a(14) =10310356843a(15) =228677282931
External references
- oeis: A146870